Overland Storage NEO 200S User Manual page 158

NEO 200s/400s User Guide
LCD
Short for Liquid Crystal Display. An electronic device that uses liquid crystal to display
messages.
LED
Short for Light-Emitting Diode. An LED is a type of diode that emits light when current
passes through it. Visible LEDs are used as indicator lights on electronic devices.
Linux
A Unix-like operating system that was designed to provide personal computer users a free
or very low-cost operating system comparable to traditional and usually more expensive
Unix systems.
Load Balancing
A process available only in multi-Ethernet configurations. The Ethernet port transmission
load is distributed among two or more network ports (assuming the cards are configured for
load balancing). An intelligent software adaptive agent repeatedly analyzes the traffic flow
from the server and distributes the packets based on destination addresses.
Local Group/Local User
A group/user defined locally on a SnapServer using the Web User Interface. The local
user is defined by the server administrator. Windows domain, ADS, and NIS users are not
considered local.
LTO
Short for Linear Tape-Open, a technology that was developed jointly by HP, IBM, and
Certance (Seagate) as an open standards. It is ideally suited for backup, restore, and
archive applications, and provides reliability in both stand-alone and automated
environments. The tape cartridges go by the label "Ultrium."
• Ultrium generation 3 (LTO-3) cartridge – up to 800 GB capacity (2:1 compression)
and an uncompressed transfer rate of 80 MB/s.
• Ultrium generation 4 (LTO-4) cartridge – up to 1.6 TB capacity (2:1 compression) and
an uncompressed transfer rate of 120 MB/s.
• Ultrium generation 5 (LTO-5) cartridge – up to 3.0 TB capacity (2:1 compression) and
an uncompressed transfer rate of 140 MB/s.
LUN
Short for Logical Unit Number. A SCSI or Fibre Channel device identifier. LUN is a
subdivision of a SCSI target.
LVD
Short for Low Voltage Differential. LVD is a method of powering SCSI cables that will be
formalized in the SCSI-3 specifications. LVD uses less power than the current differential
drive (HVD), is less expensive, and allows for higher speeds such as those of Ultra-2 SCSI.
LVD requires 3.3 volts (versus 5 volts for HVD).
MAC Address
Short for Media Access Control address, a hardware address that uniquely identifies each
node of a network. In the Open Systems Interconnection (OSI) model, one of two sublayers
of the Data Link Control layer concerned with sharing the physical connection to the
network among several computers. Each Ethernet port has a unique MAC address.
10400367-001 04/2012
©2012 Overland Storage, Inc.
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